1. Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences Co., Ltd., Shanghai 200032, China；
2. Shanghai Jianke Engineering Renovation Technology Co., Ltd., Shanghai 200032, China
Abstract：To study the seismic performance of traditional timber structures in South Yangtze River regions, a 1/2 scale model of a Chuan-Dou style wood frame with embedded brick wall was tested on shaking table. The dynamic characteristics, acceleration response and displacement response of the model structure were analyzed. The results showed that under the frequent earthquake with seismic intensity of 7 degree, the wood frame was well connected with the brick wall, the embedded brick wall significantly increased the lateral stiffness of Chuan-Dou style wood frame and decreased the structural displacement response, the maximum inter-story drifts were 1/1360 and 1/1381 in the longitudinal and transverse directions respectively, which were much less than the limits specified by Standard for design of timber structures (GB 50005—2017). Under the rare earthquakes with seismic intensity of 7 degree, the connection between the wood frame and the brick wall almost failed, and the brick wall was severely damaged, the lateral stiffness and frequency of the structure decreased significantly, the maximum inter-story drifts reached 1/54 and 1/72 in the longitudinal and transverse directions respectively, which meet the requirements in related standards. Under the rare earthquakes with seismic intensity of 7 degree (0.15g), the maximum inter-story drift reached about 1/44 and no obvious damage was observed in the wood frame itself. The out-of-plane damage of the partition wall was consistent with the macro-seismic phenomenon of “the wall collapsed but the house stands” under rare earthquake. A computational method was proposed to predict the out-of-plane bearing capacity of the embedded brick wall, and the calculation results were in good agreement with the experimental results.
